<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>fieldset  around data</title>
</head>

<body>
    <form>
        <fieldset>
            <legend>健康信息</legend>
            身高：<input type="text" />
            体重：<input type="text" />
        </fieldset>
    </form>

    <p>如果表单周围没有边框，说明您的浏览器太老了。</p>


</body>

</html>